Particle-in-cell guiding center models of ion velocity space shell instabilities Leboeuf, J. -N. ; Ashour-Abdalla, M. ; Bosqued, J. -M. ; Cornilleau-Wehrlin, N. ; Schriver, D. ; Sotnikov, V. Abstract Publication: Journal of Plasma Physics Pub Date: December 2006 DOI: 10.1017/S0022377806005630 Bibcode: 2006JPlPh..72..857L